[catman]

This is a 351 with the FMX transmission

Maybe your missing this?
AUTOMATIC INSPECTION PLATE FMX / C4 164 TOOTH LARGE BELLHOUSING

Automatic Inspection Plate FMX / C4 164 Tooth Large Bellhousing [FM-EI002B]

Automatic Inspection Plate for 1973 Bronco 1974 Bronco 1975 Bronco 1976 Bronco 1977 Bronco 1978 Bronco 1979 Bronco 1980 Bronco 1981 Bronco 1969 E-100 Econoline 1970 E-100 Econoline 1971 E-100 Econoline 1972 E-100 Econoline 1973 E-100 Econoline 1974 E-100 Econoline 1975 E-100 Econoline 1976 E-100...

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